Impact of pavement thermophysical properties on surface temperatures
Impact of pavement thermophysical properties on surface temperatures
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DOI：
10.1061/(asce)0899-1561(2007)19:8(683
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发表时间：
2007-08-01
影响因子：
3.2
通讯作者：
Golden, Jay S.
中科院分区：
文献类型：
--
作者：
Gui, Jooseng (Gavin);Phelan, Patrick E.;Golden, Jay S.
基于基本能量平衡原理，建立了一个一维路面近地表温度的数学模型，利用逐时实测的太阳辐射、气温、露点温度和风速数据计算路面近地表温度。为了寻求未来基础设施工程中铺装材料的最佳组合，对路面热物理性质的昼夜温度效应进行了分析预测。合适的铺路材料不仅可以确保道路使用者的稳定和安全。而且还具有减轻热吸收和高表面温度的能力，有助于城市热岛效应和人类舒适度。本文评价了热物理性质对路面表面温度的影响和敏感性。结果表明，热传导系数和发射率分别对路面最高和最低温度有最大的积极影响，而增加导热系数，扩散系数和体积热容有助于减轻最大但不是最小的路面近表面温度。
A one-dimensional mathematical model was developed, based on the fundamental energy balance, to calculate the pavement near-surface temperatures using hourly measured solar radiation, air temperature, dew-point temperature, and wind velocity data. An analysis was conducted to predict the diurnal temperature effects of pavement thermophysical properties with the aim of seeking an optimum composition of paving materials for future infrastructure projects. Appropriate paving materials not only ensure stability and safety for road users. but also the ability to mitigate heat absorption and high surface temperatures contributing to the Urban Heat Island Effect and human comfort. This paper evaluated the effects and sensitivities of the thermophysical properties on the pavement surface temperatures. The results indicated that both albedo and emissivity have the highest positive effects on pavement maximum and minimum temperatures, respectively, while increasing the thermal conductivity, diffusivity, and volumetric heat capacity help in mitigating the maximum but not the minimum pavement near-surface temperature.